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Cornerstone · Grades 3–5 Keystones #1 24 May 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 24 May 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 7x + 8 = 71

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 3:1

    Answer: 36 and 12
  5. 5. Statistics Mean

    Find the mean of: 20, 18, 5, 9

    Answer: 13

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